Agreed. In general most people I've talked with that keep so-called "sps" have a really hard time accepting that these corals normally catch and eat food in nature, even if they accept that corals with long tentacles and larger polyps do this (ironically, on average branching corals with smallish polyps catch more prey than corals with larger polyps or massive growth forms, though the variability along species lines is very high). For whatever reason these same hobbyists seem prone to believing in magic bullets or supplements. Thus, dosing a solution of amino acids accomplishes nothing more than feeding the corals (even if it isn't the most ideal way to do that). However, since the idea of putting food in the tank (food = nutrients which are considered bad always and in any amount) is frowned on but the idea of using myriad supplements with who-knows-what in them is very accepted the idea that AA supplements can do some great things for the corals has caught on. Yes, feeding a coral with AAs works, but it is a much more expensive way to do something anyone can do with some seafood and a blender.
Chris
